Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2024 4 14.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2024   15:18:19   ( -70.05, 126.48) 04/14/2024   15:18:56  ( -70.06, 126.54)    2.73                37
 04/14/2024   16:09:02   (  69.89, -65.96) 04/14/2024   16:08:24  (  69.90, -66.04)    3.25                38
 04/17/2024   06:44:37   (  70.42,  74.36) 04/17/2024   06:45:48  (  70.34,  75.20)   32.64                71
 04/17/2024   07:35:13   ( -70.01,-117.68) 04/17/2024   07:35:22  ( -70.01,-117.64)    1.62                 9
 04/17/2024   08:25:57   (  69.90,  49.79) 04/17/2024   08:24:49  (  69.90,  49.85)    2.23                68
 04/19/2024   23:01:26   (  70.08,-169.33) 04/19/2024   23:02:18  (  70.09,-169.27)    2.66                52
 04/19/2024   23:52:08   ( -69.97,  -1.86) 04/19/2024   23:51:48  ( -69.98,  -1.79)    2.72                20
 04/20/2024   00:42:36   (  69.02, 166.84) 04/20/2024   00:41:29  (  69.09, 164.66)   86.91                67
 04/22/2024   15:18:20   (  70.01, -53.45) 04/22/2024   15:18:44  (  70.03, -53.47)    2.51                24
 04/22/2024   16:09:02   ( -69.90, 114.03) 04/22/2024   16:08:14  ( -69.92, 114.02)    2.27                48
 04/25/2024   06:44:31   ( -70.10,-105.12) 04/25/2024   06:45:42  ( -70.10,-105.11)    0.56                71
 04/25/2024   07:35:15   (  70.00,  62.34) 04/25/2024   07:35:09  (  69.99,  62.36)    1.95                 6
 04/25/2024   08:25:54   ( -69.74,-129.95) 04/25/2024   08:24:41  ( -69.77,-130.30)   14.12                73
 04/27/2024   23:01:24   ( -70.05,  10.73) 04/27/2024   23:02:06  ( -70.03,  10.68)    2.93                42
 04/27/2024   23:52:08   (  69.95, 178.19) 04/27/2024   23:51:32  (  69.97, 178.23)    2.06                36